Protoview (#2206)

* ProtoView first tests

* Imp

* fix, reset

firmware/baseband/CMakeLists.txt

@@ -648,6 +648,15 @@ set(MODE_CPPSRC
 DeclareTargets(PABP audio_beep)
 
 
+### ProtoView
+
+set(MODE_CPPSRC
+	proc_protoview.cpp
+)
+DeclareTargets(PPVW protoview)
+
+
+
 ### TPMS
 
 set(MODE_CPPSRC

firmware/baseband/proc_protoview.cpp

@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2016 Furrtek
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "proc_protoview.hpp"
+#include "portapack_shared_memory.hpp"
+#include "event_m4.hpp"
+#include "audio_dma.hpp"
+
+void ProtoViewProcessor::execute(const buffer_c8_t& buffer) {
+    if (!configured) return;
+
+    // SR = 4Mhz ,  and we are decimating by /8 in total , decim1_out clock 4Mhz /8= 500khz samples/sec.
+    // buffer has   2048 complex i8 I,Q signed samples
+    // decim0 out:  2048/4 = 512 complex i16 I,Q signed samples
+    // decim1 out:  512/2 =  256 complex i16 I,Q signed samples
+    // Regarding Filters, we are re-using existing FIR filters, @4Mhz, FIR decim1 ilter, BW =+-220Khz (at -3dB's). BW = 440kHZ.
+
+    const auto decim_0_out = decim_0.execute(buffer, dst_buffer);       // Input:2048 complex/4 (decim factor) = 512_output complex (1024 I/Q samples)
+    const auto decim_1_out = decim_1.execute(decim_0_out, dst_buffer);  // Input:512  complex/2 (decim factor) = 256_output complex ( 512 I/Q samples)
+    feed_channel_stats(decim_1_out);
+
+    for (size_t i = 0; i < decim_1_out.count; i++) {
+        int16_t re = decim_1_out.p[i].real();
+        int16_t im = decim_1_out.p[i].imag();
+        uint32_t mag = ((uint32_t)re * (uint32_t)re) + ((uint32_t)im * (uint32_t)im);
+
+        mag = (mag >> 12);  // Decim samples are calculated with saturated gain . (we could also reduce that sat. param at configure time)
+
+        bool meashl = (mag > threshold);
+        tm += mag;
+        if (meashl == currentHiLow && currentDuration < 30'000'000)  // allow pass 'end' signal
+        {
+            currentDuration += nsPerDecSamp;
+        } else {  // called on change, so send the last duration and dir.
+            message.times[message.timeptr++] = currentHiLow ? (int32_t)(currentDuration / 1000) : -1 * (int32_t)(currentDuration / 1000);
+            if (message.timeptr > message.maxptr) {
+                shared_memory.application_queue.push(message);
+                message.timeptr = 0;
+            }
+            currentDuration = nsPerDecSamp;
+            currentHiLow = meashl;
+        }
+    }
+
+    cnt += decim_1_out.count;  // TODO , check if it is necessary that xdecim factor.
+    if (cnt > 90'000) {
+        threshold = (tm / cnt) / 2;
+        cnt = 0;
+        tm = 0;
+        if (threshold < 50) threshold = 50;
+        if (threshold > 1700) threshold = 1700;
+    }
+}
+
+void ProtoViewProcessor::on_message(const Message* const message) {
+    switch (message->id) {
+        case Message::ID::SubGhzFPRxConfigure:
+            configure(*reinterpret_cast<const SubGhzFPRxConfigureMessage*>(message));
+            break;
+
+        case Message::ID::AudioBeep:
+            on_beep_message(*reinterpret_cast<const AudioBeepMessage*>(message));
+            break;
+
+        default:
+            break;
+    }
+}
+
+void ProtoViewProcessor::configure(const SubGhzFPRxConfigureMessage& message) {
+    baseband_fs = message.sampling_rate;
+    baseband_thread.set_sampling_rate(baseband_fs);
+    nsPerDecSamp = 1'000'000'000 / baseband_fs * 8;  // Scaled it due to less array buffer sampes due to /8 decimation.  250 nseg (4Mhz) * 8
+
+    // constexpr size_t decim_0_output_fs = baseband_fs / decim_0.decimation_factor; //unused
+    // constexpr size_t decim_1_output_fs = decim_0_output_fs / decim_1.decimation_factor; //unused
+
+    decim_0.configure(taps_200k_wfm_decim_0.taps);
+    decim_1.configure(taps_200k_wfm_decim_1.taps);
+
+    configured = true;
+}
+
+void ProtoViewProcessor::on_beep_message(const AudioBeepMessage& message) {
+    audio::dma::beep_start(message.freq, message.sample_rate, message.duration_ms);
+}
+
+int main() {
+    audio::dma::init_audio_out();
+    EventDispatcher event_dispatcher{std::make_unique<ProtoViewProcessor>()};
+    event_dispatcher.run();
+    return 0;
+}

firmware/baseband/proc_protoview.hpp

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2016 Furrtek
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+/*
+    Creator: @htotoo
+*/
+
+#ifndef __PROC_PROTOVIEW_H__
+#define __PROC_PROTOVIEW_H__
+
+#include "baseband_processor.hpp"
+#include "baseband_thread.hpp"
+#include "rssi_thread.hpp"
+#include "message.hpp"
+#include "dsp_decimate.hpp"
+
+class ProtoViewProcessor : public BasebandProcessor {
+   public:
+    void execute(const buffer_c8_t& buffer) override;
+    void on_message(const Message* const message) override;
+
+   private:
+    size_t baseband_fs = 0;  // will be set later by configure message.
+    uint32_t nsPerDecSamp = 0;
+
+    /* Array Buffer aux. used in decim0 and decim1 IQ c16 signed  data ; (decim0 defines the max length of the array) */
+    std::array<complex16_t, 512> dst{};  // decim0 /4 ,  2048/4 = 512 complex I,Q
+    const buffer_c16_t dst_buffer{
+        dst.data(),
+        dst.size()};
+
+    /* Decimates */
+    dsp::decimate::FIRC8xR16x24FS4Decim4 decim_0{};
+    dsp::decimate::FIRC16xR16x16Decim2 decim_1{};
+
+    uint32_t currentDuration = 0;
+    uint32_t threshold = 0x0630;  // will overwrite after the first iteration
+
+    bool currentHiLow = false;
+    bool configured{false};
+
+    // for threshold
+    uint32_t cnt = 0;
+    uint32_t tm = 0;
+
+    void configure(const SubGhzFPRxConfigureMessage& message);
+    void on_beep_message(const AudioBeepMessage& message);
+
+    ProtoViewDataMessage message = {};
+
+    /* NB: Threads should be the last members in the class definition. */
+    BasebandThread baseband_thread{baseband_fs, this, baseband::Direction::Receive};
+    RSSIThread rssi_thread{};
+};
+
+#endif /*__PROC_PROTOVIEW_H__*/

firmware/baseband/proc_subghzd.cpp

@@ -35,6 +35,7 @@ void SubGhzDProcessor::execute(const buffer_c8_t& buffer) {
 
     const auto decim_0_out = decim_0.execute(buffer, dst_buffer);       // Input:2048 complex/4 (decim factor) = 512_output complex (1024 I/Q samples)
     const auto decim_1_out = decim_1.execute(decim_0_out, dst_buffer);  // Input:512  complex/2 (decim factor) = 256_output complex ( 512 I/Q samples)
+    feed_channel_stats(decim_1_out);
 
     for (size_t i = 0; i < decim_1_out.count; i++) {
         int16_t re = decim_1_out.p[i].real();

firmware/baseband/proc_weather.cpp

@@ -36,6 +36,7 @@ void WeatherProcessor::execute(const buffer_c8_t& buffer) {
 
     const auto decim_0_out = decim_0.execute(buffer, dst_buffer);       // Input:2048 complex/4 (decim factor) = 512_output complex (1024 I/Q samples)
     const auto decim_1_out = decim_1.execute(decim_0_out, dst_buffer);  // Input:512  complex/2 (decim factor) = 256_output complex ( 512 I/Q samples)
+    feed_channel_stats(decim_1_out);
 
     for (size_t i = 0; i < decim_1_out.count; i++) {
         int16_t re = decim_1_out.p[i].real();

firmware/baseband/proc_weather.hpp

@@ -58,8 +58,6 @@ class WeatherProcessor : public BasebandProcessor {
     bool currentHiLow = false;
     bool configured{false};
 
-    uint8_t modulation = 255;  // 0 AM, 1 FM  255 = Not set
-    uint8_t protoMode = 255;   // 0 weather, 1 subghzd, 255 = Not set
     // for threshold
     uint32_t cnt = 0;
     uint32_t tm = 0;